Rubber tire for vehicles.



A. Dow. RUBBER TIRE FOR VEHICLES.

APPLIUATION FILED DEC. 6, 19117.

1,024, l 89 E Patented Apr. 23, 1912.

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ALEXANDER DOW, 0F NEW YORK, N. Y.

RUBBER TIRE FOR VEHICLES.

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Application vfiled. December To all whom it may concern:

citizen of the United States, residing at New the county of New York andState of New York, have invented certain new and useful Improvements inRubber Tires for Vehicles, of which the following is a full, clear, andexact specification.

My invention relates to improvements Vin rubber tires adapted for use oncommercial andcther vehicles, and more especially to improvements in themethod of their internal construction tothe end that more l serviceable`wearing qualities of the tire are securedand the tendency-,of suchtires-tro open up from cuts orto break o' inpieces of considerable sizeis overcome.

Tires are made in variety of forms and the methods of attaching them tothe wheel rim are diversiiied. My improvement deals solely withthe'construction of the solid rubber tire, and has nothing to do withthe method of attachment of the same to theA wheel rim.

A study of the conditions of distortion to which a tire is exposed inuse discloses the fact that this distortion of the rubberoccurs in threedimensions, or directions, verti cally, to an 'extent dependent upon theform and nature of the object producing it. Y A nd when a depression inthe tire is made which exceeds the elastic limit of the: material,tearing or cutting" of the rubber follows and this opening once madereadily enlarges, until parts 'ofl the tire fall away in consequence. Italso follows from the peculiar changes which rubber undergoes duringsuch service, that the whole body of the tire tends from repeatedheating and cooling to contract in size, withthe result that cuts whichat -first appear to'close, later open and continue to tear andincreasein size to the great deterioration of the tire.

l am aware'that fabric has been inserted in the rubber of the body ofthe tire to prevent this continued tearing and to re-inforce the rubber,but this has not been done with the object in v iew to provideadequately for,

' and stresses have been put vupon the fabric to a degree which it wasincapable of rc- Specification o1 Letters Patent.

laterally. and circumferentially, each .Patented Apr. 23, 19112. e,1911. serial no. 664,152.

sisting and rupture has. resulted. Cotton fabric such `as is ordinarilyused in tire manufacture is capable of longitudinal or lateralcompression, but cannot be extended beyond aslnall degreewithoutbreaking or tearing except when pulled along the diagonal of the weavewhen considerable stretching is possible. o

My invention consists in embodying; dut'- ing the construction of thetire, one oiiinore layers of fabric corrugated, curved orotherwisedisposed in such a manner, as to permit `of an necessary distortion ofthe inclosing ru ber in three directions or dimensions, without this.fabric being compelled ence/of the tire being impaired, the particlesof-rubber being as free as heretofore to adjust themselves, as thoughthe fabric was not inclosed, to displacement inlany' direction and beingbound together and reinforced against tearing apart bythe added strengthof the fabric incorporated in the body of the rubber. Another-advantagearising from the corrugated or curved layers of the fabric is that asthe rubber'of the tire wears away, continuous layers of the fabric arenot brought to the surface, the same being exposed and wearing away onlyin lines or points, and therefore the layers of thelrubber on the fabricdo not strip in large sections as occurs frequently in pneumatic tiresin which the fabric must be laid in concentric circles to resist thepressure of the air contained.

same reference characters indicate the s e' parts 4throughout thespecifications: Figi e l is a plan view of a portion of the tread of asolid tire embodying my invention. Fig. 2 is a vertical section ofthesame onI the line 2-2. Y v

The solid rubber tireS is of any of the usual or desired 'cross section,and for the sake of illustrationl have shown the same Yas mounted on abase ring 9 secured on`the ltelly 13 of a wheel by the clips 10 whichextend in between the base ring 9 and' a telly hand l1, the clips beingheld tin .position by the bolts 14. None of thisA construction howeverforms any part o my invention. l g

By my invention I insert in the body of circumfercntially extendinlayers of fabric 4C, 5,-v t5, 7 and 8, each of t eselayers 'being tostretch, and therefore without the resili- Referring to the drawings, inwhich the.

the solid rubber tire 3 a separated series ofl formed into undulntions,the crests of which extend diagonally of the eiremnt'erence of the tire.The strip of fabric forming the layers is eut on the bias so that theweave of the lfabric'extendsdiagonally of the eirenml'erence of thetire.

From the foregoing description it will be seen that l have provided areinforce for a .solid tire which, because of the fact that the weave olthe fabric reinforce runs diagonally to the circumference ot' the tire,permits a yield circumferentially and at right angles thereto, andbecause of the diagonally extending undulations or corrugations thereinforce can also yield in lines diagonal to the circiimference. Thereinforce therefore, while preventing` the disinteg ation of the tire,does not affect the resiliency thereof.

I realize that considerable variation is possible in the details ofconstruction and arrangement of parts Without departing :from thespiritof my invention, and I therefore do not intend 'to limit myself tothe specic form shown and described.

Having thus described my inventio11,what I claim as new and desire tosecure by Letters Patent is,-

solid tire formed of rubber andhaving embedded therein separate layersof cireamterentiallyv extending fabric, said layers extending throughthe .major portion of the cross lsection of the tire.I each layer beingformed into undulat-ions whose crests extend diagonally otl the tire.,and each layer beingformed from strips of fabric Whose weave extendsdiagonally of the layer. V

1n testimony whereof I aiix my signature, in presence of two witnesses.

. ALEXANDER DOW.

Witnesses H. C. EGAN, GEO. N. Krim.

